I have a question about shaking test or simulation earthquake shaking test and its efficacy to the APC Racks or InRow Cooling environments.Is there any video that capture these moments?

I want to know what would be done on a APC Rack when shaking by earthquake power !!!

If there is any video references please reply me its LINKS.

Regards,

Matthew Nq

]]>MatthewGeneralhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/12270/-solved-earthquack-and-shaking-test-for-apc-racks-and-inrow-coolinghttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/12270/-solved-earthquack-and-shaking-test-for-apc-racks-and-inrow-coolingSun, 31 Jul 2016 11:10:34 GMThttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/12270/-solved-earthquack-and-shaking-test-for-apc-racks-and-inrow-coolingBest way to control humidity in APC/Schneider based data-centre.https://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/11574/best-way-to-control-humidity-in-apc-schneider-based-data-centreHi there folks

So we have a small data centre, or machine room as I call it, at work. The equipment in it that's out of interest for this discussion is:

2 x ACRC301S

1 x APC Smart-UPS VT 40 kVA

1 x NetBotz 200

16 x APC PDU AP8981

The problem is that now when it's like -10C to -20C degrees outside the air in it gets very dry. I need something that automatically balance the humidity for me through out the year. Something simple, cost effective and something that I can trust wont blow up in a fountain like explosion. =)

I have a unit PDRDPH10U-R incomplete in our Lab, I would like to know the Part Numbers for:

- The PanelBoard that does match with this unit.

- The Circuit BreakerS that could match into the PanelBoard that matches this unit.

- The Monitoring System for the Circuit Breakers.

Any information would be helpful.

Thanks in advance for your help and time.

JL

]]>Jose LuisGeneralhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/11543/pdrdph10u-r-panelboardhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/11543/pdrdph10u-r-panelboardFri, 08 Jan 2016 14:26:44 GMThttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/11543/pdrdph10u-r-panelboardCalculate expected PDU per rackhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/10663/calculate-expected-pdu-per-rackHello - I have been looking for some guidance on rack design with regard to power usage. I have been asked to design our rack layout in terms of equipment placement and power consumption for each PDU.

We have both AP8861 20A (for servers) and AP8941 30A (for network equipment) PDU's and I am trying to calculate how much load the equipment in each rack will use, I can then plan where everything can go. We will have 2 PDUs per rack and use 3 phase power.

I used the calculation W/V=A - using the Wattage rating from the device documentation, 208 Volts to get Amps. This give me a higher number than i expected (i figured it would be an average, i understand it is not the max or min)

Am I calculating this incorrectly? Any guidance to documentation or help would be great!

I found the below info which looks to be along the correct lines:

50A 208v 3 Phase Rack PDU Load Ratings and Calculations Explained

Issue

50A 208v 3 Phase Rack PDU Load Ratings and Calculations Explained

Product Line

3 Phase Rack Power Distribution models

AP88XX

AP89XX

AP78XX

AP79XX

Environment

All serial numbers

All firmware versions

50A 3 Phrase Rack PDU

Cause

This article will outline how phase current ratings and load calculations are determined as well as how load calculations are reached. AP8868 will be used as an example.

Resolution

In regards to the AP8868, each bank references two phases:

Bank 1 - Phase 1 and 2Bank 2 - Phase 2 and 3Bank 3 - Phase 1 and 3

AP8868 is one of the few units where the capacity is limited by the output circuit breakers and not the input cord/plug rating. The breaker on each bank is rated for 20A (de-rated to 16A per UL). Bank 1 draws current from phases 1 and 2 simultaneously. Bank 2 draws current from phases 2 and 3. This means that phase 2 is supplying current to both banks 1 and 2. However, like the phases, the banks are 120° out of phase. This means that part of the time that current is flowing one direction on bank 1, it is flowing the same direction on bank 2 and the two currents increase the draw from phase 2 to over 20A. However, at other times, when current is flowing one direction on bank 1, it is being returned on bank 2. This means that you can't just add the loads on the two banks to get the load on phase 2.

Here is another way to look at it. We are in essence supplying three 120V phases, but we are powering three 208V loads. If the loads are 16A, the total power consumed is (3 banks) x (208 Volts) x (16 Amps) = 9984 Watts. The current on the input must then be (20A x 208v x 3 banks)/(three phases x 120 Volts) = 34.6 Amps. This is how the total current per phase is determined but then please note the de-rating of values, per UL, which is 9984W.

Now that we know the load ratings, let's look at how to calculate the total power output.

For a single phase Rack PDU, Total Power = (Total Current) x (208V)

For a three phase Rack PDU, Total Power = (Total Three Phase Current) x (208V) x [sqrt(3)]

For a PDU like AP8868 with 3 banks, we'd use the single phase calculation for each of the three banks and then add them together to get the "Total Three Phase Current." The input of the Rack PDU is actually limited by the internal circuit breakers.

]]>PeterGeneralhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/10663/calculate-expected-pdu-per-rackhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/10663/calculate-expected-pdu-per-rackWed, 18 Mar 2015 21:25:38 GMThttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/10663/calculate-expected-pdu-per-rackHow many amp/h do I need for 3KW for 15 hours?https://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/462/how-many-amp-h-do-i-need-for-3kw-for-15-hours

I have a 10KW solar installation to offset the cost of a 3KW server room.

I am thinking of installing some batteries to supplement a solar installation for night time use.The solar install was larger than I needed in order to offset low wattage days, or, when the sun didn't shine as strongly if you will. All I need is about 3KW from the install.

Anyhow, I am trying to calculate what I would need in terms of amp/h in order to never kill my batteries, yet be able to run the full load off of them during night time hours.

So, that equates to about 15hrs at 3KW/h. It's probably simpler than I am making it in my mind but I've confused myself so figured, time to post and ask pros

The next day i started continuation of device association for the Netbotz and in the middle of the day i noticed that i am not receiving alarms on the DCO but on the DCE it shows alarms, i tried restart of DCE then i tried to remove then associate again the netbotz devices but still not getting alarms, so i decided to remove the external device connection of DCE and a message showrts that i will lose the connection..after reconnect it shows that i need to drag and drop again association for devices...then so far i am now receiving alarms from the DCE but i noticed that i am not getting measured values on my UPS, Racks and RackPDUs unlike the above screen shots

Below are the screen shots after doing the above procedures;

How do i resolve the issue on the "Measurement", Do i need to remove again the Objects for UPS, RackPDU's then create device association? as previously i did not remove UPS, RackPDUS's Object..i just drag and drop associated device on the layout.

As Apc Website is an open forum for all. I have learned a lot from there. But I haven't found learning material like white papers, application notes etc on 'Servers' by which I can learn types of servers, Working philosophy and density of high storage servers etc. I wanna know what is Ibm Superdome, Dell Edge etc.

Further to the Knowledge Base FA156549, colud you please confirm if it only implies to SMART UPS ONLINE & BACK UPS or the same voltages will be recorded in other UPSs at large and GALAXY 300 in particular.

Regards,

Irfan

]]>MalikGeneralhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/608/voltages-b-w-neutral-ground-on-battery-operationshttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/608/voltages-b-w-neutral-ground-on-battery-operationsTue, 14 May 2013 10:29:47 GMThttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/608/voltages-b-w-neutral-ground-on-battery-operationsDifference b/w different type of bypass in upshttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/10408/difference-b-w-different-type-of-bypass-in-ups

Dear Team,

Please help to understand main differences among the following bypass switches/panel as per design philosophy of APC.

Please help in understanding as how to design battery frame and internal number of batteries for MGE units as for APC units it's easy and graphs are available to add external battery banks accordingly if required. Suppose a requirement is of 80kVA unit with 30mins backup at full load, I may recommend the Galaxy5000 80kVA but how I can configure the batteries for that 30min backup requirement at full load.

Thanks & Regards

]]>MalikGeneralhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/10407/how-to-configure-batteries-for-mge-unitshttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/10407/how-to-configure-batteries-for-mge-unitsMon, 22 Apr 2013 10:41:48 GMThttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/10407/how-to-configure-batteries-for-mge-unitshow can I monitor large number of PDUs?https://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/9261/how-can-i-monitor-large-number-of-pdushi , I have large number of PDUs and I want to monitor all of them in on session. ( I cant monitor and manage 30 PDUs by separate ) help me. ]]>mahGeneralhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/9261/how-can-i-monitor-large-number-of-pdushttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/9261/how-can-i-monitor-large-number-of-pdusTue, 02 Oct 2012 06:19:17 GMThttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/9261/how-can-i-monitor-large-number-of-pdusInterrack load-balancing questionhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/9069/interrack-load-balancing-questionIn my racks I have two metered Bay-tech power strips (PDUs) that are connected to separate L21-30 receptacles (which in turn are connected to two different power sources).

I was told to balance out the loads on the power strips by going off the Actual Current when getting readings off the strips, vice the Max Current.

Now when I look at the actual numbers it appears as though I'll be fine if one of the power strips dies and everything fails over to the "b" strip, but if I were to use the max current numbers, it's clear that I would trip the breakers during a fail over.

In your opinions what is the best practice for this situation, load-balance off of actual current or the recorded max current?

Also if there are any white papers that touch on this subject it would be greatly appreciated if you could link it (I've tried searching multiple sites but couldn't find quite what I was looking for).

Thank you for your time. ]]>SteveGeneralhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/9069/interrack-load-balancing-questionhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/9069/interrack-load-balancing-questionSun, 05 Aug 2012 02:57:06 GMThttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/9069/interrack-load-balancing-questionInRow SC short cycles compressorhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/8631/inrow-sc-short-cycles-compressorDuring the late spring and early fall of the year we find a period where the InRow SC will spend part of the day cycling. It will run for 5-10 minutes, then shutdown, followed immediatly by a restart. One thing we notice while it is running is that it seldom runs with a cfm below 900 or a load of 5kw. It would seem that it thinks it acheives a setpoint and shutsdown instead of slowing itself down further. But during the restart cycle it spends a bit of time in the 600cfm range but not for long.

So what range of output/cfm should the unit be able to track??

I suspect I need to fiddle with the different setpoints more but finding decient directions on how they interact is not easy. My current settings are:

-ken c ]]>kenGeneralhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/8631/inrow-sc-short-cycles-compressorhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/8631/inrow-sc-short-cycles-compressorThu, 31 May 2012 14:48:29 GMThttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/8631/inrow-sc-short-cycles-compressorBest Practice for InRow RC electrical wiringhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/8478/best-practice-for-inrow-rc-electrical-wiringI've been unable to find a white paper on the best practice for wiring up an InRow RC....

My question is does APC recommend direct connection to mains/utility supply or connection to a generator?

I'm trying to help the building manager guarantee that we're not going to exceed the generator's output load.

The generator takes about 10 seconds to start from a lights out event.

The UPS is currently running at about 38% of capacity, which uses 5.3 amps at 208 volts.

What kind of load can we expect the UPS to create when power is restored? I realize the current draw is probably going to be above our usual 5.3 amps, as some of the current draw of the device is going to be recharging the battery. I would hope that the device doesn't take on the full 20 amps available in the circuit it is plugged into ;) ]]>BrentGeneralhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/7828/current-draw-of-rm3000sm2u-208-volts-during-rechargehttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/7828/current-draw-of-rm3000sm2u-208-volts-during-rechargeTue, 04 Oct 2011 19:49:46 GMThttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/7828/current-draw-of-rm3000sm2u-208-volts-during-rechargeHow to account for rudundant PSU'shttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/7790/how-to-account-for-rudundant-psu-sWhen planning a new UPS system, what is the proper way to account for redundant PSUs when planning UPS capacity? For example, if I have a server that has (2) 500W redundant PSUs should the UPS be scaled to handle 1000W or just 500W. I realize this isn't best practice for full redundancy and that the example is probably over simplified, but I am just trying to get an understanding of how I should account for that in my UPS design. Thank you. ]]>JacobGeneralhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/7790/how-to-account-for-rudundant-psu-shttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/7790/how-to-account-for-rudundant-psu-sFri, 23 Sep 2011 15:04:25 GMThttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/7790/how-to-account-for-rudundant-psu-sDo we need synchronization module between 2N UPS system supply STS?https://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/7743/do-we-need-synchronization-module-between-2n-ups-system-supply-stsDo we need synchronization module between 2N UPS system supply STS? If don't have synchronization module, what happen? ]]>patphongGeneralhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/7743/do-we-need-synchronization-module-between-2n-ups-system-supply-stshttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/7743/do-we-need-synchronization-module-between-2n-ups-system-supply-stsFri, 16 Sep 2011 02:40:30 GMThttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/7743/do-we-need-synchronization-module-between-2n-ups-system-supply-stsDual PS = Dual UPS?https://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/7740/dual-ps-dual-upsThis may seem like a basic question, but it came up during a rework of our server room. All but two of our servers have dual power supplies. We have only a couple of circuits powering the room, and all feed from the same power source, municipal power. Assuming that the UPS units can handle the loads, is it best practice to have each power supply in a server fed from a different UPS? Thanks. ]]>NealGeneralhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/7740/dual-ps-dual-upshttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/7740/dual-ps-dual-upsThu, 15 Sep 2011 20:17:04 GMThttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/7740/dual-ps-dual-upsConfused with power calculationhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/7601/confused-with-power-calculationHello
I am planning for 16 racks data center with 10KW each rack (single phase load). So total load would be (10KW x 16) 160KW 1ph.

So based on my logic when I choose a UPS with *3ph output*, I can divide it by three. That means a UPS with 54KW 3ph should be sufficient. (plus buffer, I would think of SY96K96H-PD)

But I was told that I cannot divide load by three and must use UPS rated 160W 3ph or higher.

Can anyone advise what should be the correct method?

Thank You
George ]]>GijiGeneralhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/7601/confused-with-power-calculationhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/7601/confused-with-power-calculationSat, 13 Aug 2011 20:12:57 GMThttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/7601/confused-with-power-calculationReplace hot air in a containment systemhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/7595/replace-hot-air-in-a-containment-systemHello
I am in the process of a concept for a new high density data center in a country closer to equator.

I have used hot-aisle containment with DX InRow cooling and kind of like the concept.

When thinking of making that system better, I came up with the following idea. I want to know if this is practical and how it will improve the overall system.

My idea is to use some fans + duct on top of the hot aisle to remove the hot air and pump filtered ambient air into the rear of InRow cooling system (via a duct under the raised floor).

This way, the InRow do not have cool the hot air (estimated 30-35C) but just the ambient temperature (estimated 25-29C) or better in other countries.

The questions I have are...
1. Will this improve the efficiency, performance of the cooling system?
2. Will there be too much complication + operating expense to operate the new air-replacement system?

Thank you in advance
George ]]>GijiGeneralhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/7595/replace-hot-air-in-a-containment-systemhttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/7595/replace-hot-air-in-a-containment-systemFri, 12 Aug 2011 11:58:30 GMThttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/7595/replace-hot-air-in-a-containment-systemConnect Multiple UPS to a single outlethttps://forums.apc.com/spaces/18/server-room-data-center-design-best-practices/forums/general/7315/connect-multiple-ups-to-a-single-outletHi ,At our hosted facility we have 1 30AMP outlet provided to our Rack. i have 2200 Smart UPS that supports max 1600W output @ 120V so max 13.33 Amps i guess. we will have close to 22Amps load for the equipment we are planning to install in the Rack. will have to connect 2 of the 2200 Smart Ups how do i achieve it safely without tipping the scale :)